package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.BitFieldSubCommands;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Slf4j
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {

    @Autowired
    private UserMapper userMapper;

    @Resource
    private StringRedisTemplate stringRedisTemplate;
    @Override
    public Result sendCode(String phone, HttpSession session) {
        boolean matches = RegexUtils.isPhoneInvalid(phone);
        if(matches){
            return Result.fail("手机号不符合规范");
        }
        String key= RedisConstants.LOGIN_CODE_KEY+phone;
        String code = RandomUtil.randomNumbers(6);
        stringRedisTemplate.opsForValue().set(key,code,RedisConstants.LOGIN_CODE_TTL, TimeUnit.MINUTES);
        log.info("发送验证码 {}",code);

        return Result.ok();
    }

    @Override
    public Result signCount() {
        Long userId = UserHolder.getUser().getId();
        String format = DateTimeFormatter.ofPattern("yyyyMM").format(LocalDateTime.now());
        int day = LocalDateTime.now().getDayOfMonth() - 1;
        List<Long> list = stringRedisTemplate.opsForValue().bitField(
                RedisConstants.USER_SIGN_KEY + userId + format,
                BitFieldSubCommands.create()
                        .get(BitFieldSubCommands
                                .BitFieldType
                                .unsigned(day))
                        .valueAt(0));
        if (list == null || list.isEmpty()) {
            return Result.ok(0);

        }
        Long num = list.get(0);
        if (num == null || num==0) {
            return Result.ok(0);

        }
        int count =0;
        while (true){
            if((num&1)==0){
                break;
            }else {
                count++;
            }
            num >>>=1;
        }
        return Result.ok(count);
    }

    @Override
    public Result sign() {
        Long userId = UserHolder.getUser().getId();
        String format = DateTimeFormatter.ofPattern("yyyyMM").format(LocalDateTime.now());
        int day = LocalDateTime.now().getDayOfMonth() - 1;
        stringRedisTemplate.opsForValue().setBit(RedisConstants.USER_SIGN_KEY+userId+format,day,true);
        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {
        String phone = loginForm.getPhone();
        boolean matches = RegexUtils.isPhoneInvalid(phone);
        if(matches){
            return Result.fail("手机号不符合规范");
        }
        String loginFormCode = loginForm.getCode();
        String code = stringRedisTemplate.opsForValue().get(RedisConstants.LOGIN_CODE_KEY + phone);
        if (loginFormCode==null || !loginFormCode.equals(code)) {
            return Result.fail("验证码输入错误");
        }
        User one = query().eq("phone",phone).one();
        if(one==null){
            one = new User();
            one.setPhone(loginForm.getPhone());
            one.setNickName(SystemConstants.USER_NICK_NAME_PREFIX+RandomUtil.randomString(10));
            one.setCreateTime(LocalDateTime.now());
            one.setUpdateTime(LocalDateTime.now());
            save(one);
        }
        String token = UUID.randomUUID().toString(true);
        UserDTO userDTO = BeanUtil.copyProperties(one, UserDTO.class);
        Map<String, Object> map = BeanUtil.beanToMap(userDTO,new HashMap<>(),
                CopyOptions.create().setFieldValueEditor((k,v) ->v.toString()));
        stringRedisTemplate.opsForHash().putAll(RedisConstants.LOGIN_USER_KEY + token,map);
        stringRedisTemplate.expire(RedisConstants.LOGIN_USER_KEY +token,RedisConstants.LOGIN_USER_TTL,TimeUnit.MINUTES);

        return Result.ok(token);
    }
}
